The patch titled
cls_cgroup: remove unneeded cgroup_lock
has been removed from the -mm tree. Its filename was
cls_cgroup-remove-unneeded-cgroup_lock.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: cls_cgroup: remove unneeded cgroup_lock
From: Li Zefan <lizf@xxxxxxxxxxxxxx>
We can remove this lock here, since we are in cgroup write handler and
thus the cgrp is guaranteed to be valid, and no lock is needed when
writing a u32 variable.
Signed-off-by: Li Zefan <lizf@xxxxxxxxxxxxxxx>
Acked-by: Paul Menage <menage@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
net/sched/cls_cgroup.c | 6 ------
1 file changed, 6 deletions(-)
diff -puN net/sched/cls_cgroup.c~cls_cgroup-remove-unneeded-cgroup_lock net/sched/cls_cgroup.c
--- a/net/sched/cls_cgroup.c~cls_cgroup-remove-unneeded-cgroup_lock
+++ a/net/sched/cls_cgroup.c
@@ -62,13 +62,7 @@ static u64 read_classid(struct cgroup *c
static int write_classid(struct cgroup *cgrp, struct cftype *cft, u64 value)
{
- if (!cgroup_lock_live_group(cgrp))
- return -ENODEV;
-
cgrp_cls_state(cgrp)->classid = (u32) value;
-
- cgroup_unlock();
-
return 0;
}
_
Patches currently in -mm which might be from lizf@xxxxxxxxxxxxxx are
linux-next.patch
cgroups-make-messages-more-readable.patch
devcgroup-skip-superfluous-checks-when-found-the-dev_all-elem.patch
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